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Predictions for neutron stars from holographic nuclear matter
by Nicolas Kovensky, Aaron Poole, Andreas Schmitt
This Submission thread is now published as
|Authors (as registered SciPost users):||Aaron Poole · Andreas Schmitt|
|Preprint Link:||scipost_202201_00043v1 (pdf)|
|Date submitted:||2022-01-31 18:43|
|Submitted by:||Schmitt, Andreas|
|Submitted to:||SciPost Physics Proceedings|
|Proceedings issue:||XXXIII International Workshop on High Energy Physics (IWHEP2021)|
We discuss masses, radii, and tidal deformabilities of neutron stars constructed from the holographic Witten-Sakai-Sugimoto model. Using the same model for crust and core of the star, we combine our theoretical results with the latest astrophysical data, thus deriving more stringent constraints than given by the data alone. For instance, our calculation predicts - independent of the model parameters - an upper limit for the maximal mass of the star of about 2.46 solar masses and a lower limit of the (dimensionless) tidal deformability of a 1.4-solar-mass star of about 277.
Published as SciPost Phys. Proc. 6, 019 (2022)
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The paper concerns a very hot subject of such the neutron star characteristics as its mass, radius, and tidal deformability. The authors managed to apply , in a quite inventive way, a holographic model by Witten et al., with concrete results which allow comparison with the observational data. The latter shows that the holography principle works amazingly well.